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A Reduced-Complexity, Scalable Implementation of Low Density Parity Check (LDPC) Decoder

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4 Author(s)
Yuming Zhu ; Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ ; Chen, Yanni ; Hocevar, D. ; Goel, M.

In this paper, a reduced-complexity, scalable implementation of LDPC decoder is presented. The decoder architecture in this paper is an improved version and the new architecture makes the implementation of multiple code rates, multiple block sizes and multiple standards LDPC decoder very straightforward. As an example, we implemented a parameterized decoder that supports the LDPC code in IEEE 802.16e standard, which requires code rates of 1/2, 2/3 and 3/4, with block sizes varying from 576 to 2304. The decoder is synthesized with Texas Instruments' 90 nm ASIC process technology, with a target operation frequency of 100 MHz, 15 decoding iterations, the maximum data rate is up to 256 Mbps

Published in:

Signal Processing Systems Design and Implementation, 2006. SIPS '06. IEEE Workshop on

Date of Conference:

Oct. 2006

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